Improvement in gates



into each other.

hoop, g, secured by a horizontal rod, G, which IINITED STATES PATENT OFFICE.

J. P. CADMAN, `o'F IIREEPORT, ILLINOIS.

IM PROVEM ENT IN GATES.

Specification forming part'of Letters Patent No. 56,174, dated July 10, 1866.

To all whom fit may concern:

Be it known that I, J. P. GADMAN, of Freeport, in thc county of Stephenson and Stateof Illinois, have invented certain new and useful Improvements in Gates; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings and the letters of reference marked thereon, Inaking a part of this specification. i

A and A represent two unhin ged gates, having an extended upright at each side of each gate. B represents a platform, which rests on the ground, and having two uprights, C C, connected at their tops bya beam, F. Pivoted to this beam are two scantlin gs haviugme tallic semi-elliptic ways, which extend a short distance beyond the end of the beam F, and are provided with teeth or cogs o o, where they meet at the center` of the beam F and mesh Upon each of the extended uprights of gates A and A are metallic strips c, having grooved pulleys-which rest upon the ways D D and-support the said gates.

P P represent two small posts resting upon the 'platform and a short distance forward of the gate-posts C C. These posts have each a small roller, fw, upon their tops, and opposite corresponding rollers set within the gate-posts C, to prevent the gates A and A from falling without their places and to assist in sliding thel same laterally, as will be hereinafter set forth.

Upon an outer end of the platform B, and at right angles with the gate-posts C, are placed three posts, H, K, and H, (see Fig. 2,) a suitable distance apart and from the aforesaid gates. The post K is on a line with the gate-posts C C and directly beneath the extreme end of one of the Ways D. Within a suitable opening in this post K are placed four pulleys, J, and a vertical rod, f, having two loops, (see Fig. 3,) one between the pulleys J and a larger one below said pulleys. This rod is connected to the end of one of the ways D, and passes down through the post K and under the platform B. Near the top of each of l the end posts, H, are two pulleys, t t, while at the bottom of each of said posts, and at the outer end of the platform, is a semicircular is crooked in the form shown, and lies on the ground in front of and parallel with the gates. This rod is held in its place by small keepers i" fr, and passes through the bottom of each of the outer posts, H H, where it is bent into a loop to secure the two ends of the semicircular hoops g, where there are weights k la attached, to be hereinafter described.

E represents a lever which is placed near one of the posts H, and is provided with a rod, E', which passes under the platform and is connected to the vertical rod f.

lVI and M are cords or chains secured in the loop, and semicircular hoops g pass over the pulleys t t in the posts H H, running from thence into openings in the post K, over the pulleys J in said post, and are secured to the small and upper loop in the vertical rod f. Thus it will be seen that by drawing the cord M at either rof the posts H the rod f is drawn toward the ground, bringing thewayD downward with it, when the inner ends of vboth ways D are thrown upward and the gates A and A slide down the inclined plane, leaving an opening for pedestrians or vehicles, Svc., to pass. The aforesaid gates are prevented from sliding or rolling oft` the ways D by the post K at one side of platform and a small post (not shown) at the opposite side.

The gates can be opened and closedin three different ways: First, by the cords M and M second, by the lever E and rod E', third, by Y the treadle-rod G, which will open the gates by a wagon or any running over and pressing it down.

When the gates are opened the weights lc will fall in their natural positions and close them, if not otherwise closed, or the cord or chain M will close the gates by drawing upon them,which elevates the rod fand outerpoint of one of the ways D, and the gates rol] down to their original places. When the gates are closed they are secured in that position by small hooks a a, which are secured at the bottom of each of the inner posts in a catch in a block, b.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. The ways D D, provided with cogs o o,

When pivoted to the uprights G C alud beam F, es and for the purposes specified.

l 2. The posts H, K, and H, provided with pulleys J and t, cords M and M, and rod f, Working the Ways D'D, arranged in the Inanuer substantially as and. for lthe purposes set forth.

3. The treadle-rods G, provided with rinuhoops g and Weights 7c, Working the rod f, as and for the purposes set forth.

4. The gates A and A', attached to the Ways D D by the strips and pulleys e, secured by the posts P P7 in combination with the posts H, K, and H, with pulleys J and b, cords M aud M', lever E, Iamd rod Ef, in the manner arranged, substatntiznllyv as and for the purposes herein specified.

As evidence that I claim the foregoing I have hereunto set my hand in the presence of two witnesses.

J. P. GADMAN. Witnesses:

C. C. SHULER, JOHN GoATEs. 

